(CNN) — Amedy Coulibaly, a suspect in Thursday’s killing of a police officer in the Paris suburb of Montrouge, also is believed to be a suspect in Friday’s shooting and hostage situation at a kosher market in eastern Paris, a police union spokesman said Friday on CNN affiliate BFMTV. The suspect is believed to be holding six people inside the market, police union spokesman Romain Fabiano told BFMTV.

The French Interior Ministry has not confirmed the number of people being held.